{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:53:22.316405", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2013-May-22_to_2013-May-27_299.5_-1.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2013050000889}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 22 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 55625.04418243755}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -1.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 1.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-05-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.0, -0.75], [-60.47, -0.97], [-60.25, -1.5], [-60.47, -2.03], [-61.0, -2.25], [-61.53, -2.03], [-61.75, -1.5], [-61.53, -0.97], [-61.0, -0.75]]]]}, "2013-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.0, -0.75], [-60.47, -0.97], [-60.25, -1.5], [-60.47, -2.03], [-61.0, -2.25], [-61.53, -2.03], [-61.75, -1.5], [-61.53, -0.97], [-61.0, -0.75]]]]}, "2013-05-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.25, -0.5], [-61.03, 0.03], [-60.5, 0.25], [-60.25, 0.15], [-60.0, 0.25], [-59.75, 0.15], [-59.5, 0.25], [-58.97, 0.03], [-58.75, -0.5], [-58.85, -0.75], [-58.82, -0.82], [-58.47, -0.97], [-58.32, -1.32], [-57.97, -1.47], [-57.75, -2.0], [-57.85, -2.25], [-57.75, -2.5], [-57.97, -3.03], [-58.5, -3.25], [-58.75, -3.15], [-59.0, -3.25], [-59.53, -3.03], [-59.75, -2.5], [-59.65, -2.25], [-59.75, -2.0], [-59.65, -1.75], [-59.68, -1.68], [-59.75, -1.65], [-60.0, -1.75], [-60.25, -1.65], [-60.32, -1.68], [-60.47, -2.03], [-61.0, -2.25], [-61.53, -2.03], [-61.75, -1.5], [-61.53, -0.97], [-61.18, -0.82], [-61.15, -0.75], [-61.25, -0.5]]]]}, "2013-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 0.03], [-60.5, 0.25], [-60.25, 0.15], [-60.18, 0.18], [-60.15, 0.25], [-60.25, 0.5], [-60.03, 1.03], [-59.68, 1.18], [-59.53, 1.53], [-59.0, 1.75], [-58.47, 1.53], [-58.25, 1.0], [-58.35, 0.75], [-58.25, 0.5], [-58.35, 0.25], [-58.25, 0.0], [-58.35, -0.25], [-58.25, -0.5], [-58.46, -1.0], [-58.32, -1.32], [-57.97, -1.47], [-57.75, -2.0], [-57.85, -2.25], [-57.75, -2.5], [-57.97, -3.03], [-58.5, -3.25], [-58.75, -3.15], [-59.0, -3.25], [-59.53, -3.03], [-59.75, -2.5], [-59.65, -2.25], [-59.75, -2.0], [-59.65, -1.75], [-59.68, -1.68], [-59.75, -1.65], [-60.0, -1.75], [-60.25, -1.65], [-60.5, -1.75], [-61.03, -1.53], [-61.25, -1.0], [-61.15, -0.75], [-61.25, -0.5], [-61.03, 0.03]]]]}, "2013-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.03, 0.03], [-60.5, 0.25], [-60.25, 0.15], [-60.18, 0.18], [-60.15, 0.25], [-60.25, 0.5], [-60.03, 1.03], [-59.68, 1.18], [-59.53, 1.53], [-59.0, 1.75], [-58.47, 1.53], [-58.25, 1.0], [-58.35, 0.75], [-58.25, 0.5], [-58.35, 0.25], [-58.25, 0.0], [-58.35, -0.25], [-58.25, -0.5], [-58.46, -1.0], [-58.32, -1.32], [-57.97, -1.47], [-57.75, -2.0], [-57.85, -2.25], [-57.75, -2.5], [-57.97, -3.03], [-58.5, -3.25], [-58.75, -3.15], [-59.0, -3.25], [-59.53, -3.03], [-59.75, -2.5], [-59.65, -2.25], [-59.75, -2.0], [-59.65, -1.75], [-59.68, -1.68], [-59.75, -1.65], [-60.0, -1.75], [-60.25, -1.65], [-60.5, -1.75], [-61.03, -1.53], [-61.25, -1.0], [-61.15, -0.75], [-61.25, -0.5], [-61.03, 0.03]]]]}, "2013-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.25, 0.0], [-60.15, 0.25], [-60.25, 0.5], [-60.03, 1.03], [-59.68, 1.18], [-59.53, 1.53], [-59.0, 1.75], [-58.47, 1.53], [-58.25, 1.0], [-58.35, 0.75], [-58.25, 0.5], [-58.35, 0.25], [-58.25, 0.0], [-58.35, -0.25], [-58.25, -0.5], [-58.46, -1.0], [-58.25, -1.5], [-58.47, -2.03], [-59.0, -2.25], [-59.53, -2.03], [-59.75, 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anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2749298979226182, -1.1270699924550058, -1.6397737985251741, -1.3437351333025498, -1.2437798784821672, -1.4074566385814617]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2749298979226182, -1.1270699924550058, -2.1092894482335396, -1.5503268787142588, -1.3920969015081255, -1.7021146041466864]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4964802994067672, -1.293478728078971, -1.7617033996463833, -1.4159727549651893, -1.3254830342434678, -1.4671488566336488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4964802994067672, -1.293478728078971, 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